IB Biology C3.1 Definitions

This page contains our IB Biology definitions for C3.1. By learning each one of these definitions, you will fully cover the content for IB Biology 'Plant systems'.
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determinate growth

Growth that occurs for a specific amount of time up to a determined point

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indeterminate growth

Growth that occurs indefinitely for an entire lifetime

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micropropagation

A process by which plant stem cells are cultured in cytokinin and gibberella gel to grow an entirely new plant

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phototropism

A directional growth response to light

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positive phototropism

A directional growth response to light towards the source of light

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primary growth

Growth of a plant in length

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secondary growth

Growth of a plant in width

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tropism

A growth response to an environmental factor

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